How to detect the Hexagon in imageprocessing?

I don't know how to find the hexagon shape in image. please anyone help

Answer 1

[Image Analyst]

Get the boundary of the object with bwboundaries(). Then find out if there are 6 kinks in the boundaries with the FAQ. Then see if the lengths of the sides are similar enough to be considered a hexagon rather than just some arbitrary 6-sided polygon. Also make sure it's convex by checking that the solidity is really close to 1.

[saravanakumar D]

How to find out the number of kinks? I searched in FAQ, but i didn't find anything regarding. So please tell me about how to find the number of kinks and how to measure the length of side

[Image Analyst]

From the code the FAQ directs you to, it would be length(xStar). The distance is just the simple Pythagorean theorem, so use diff() and sqrt().